OwnCloud

This is a note to #14273 (Use APCu only if available in version 4.0.6 and higher)

As Ubuntu 14.04 ships currently the php5-apcu version 4.0.2, you get according the merged PR above the Warning in OwnCloud. Ubuntu 14.10 has already release 4.0.6.

Because it may take some time that the version is updated for 14.04 but admins may want to use a stable version of php5-apcu, I thought it is maybe worth to document the procedure how to manually install version 4.0.6 or 4.0.7.